Let X be a Banach space and T = L(X, X) have ||T|| < 1. Define Tº to be the identity map (that is, Tº(x) = x, for all x € X). Let r = ||T||. Show that ||T"|| ≤ r", for all n € N.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.5: Graphs Of Functions
Problem 51E
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Let X be a Banach space and T = L(X, X) have ||T|| < 1. Define T° to be the identity map (that is,
Tº(x) = = x, for all x € X). Let r = ||T||. Show that ||T|| ≤ r", for all n € N.
Transcribed Image Text:Let X be a Banach space and T = L(X, X) have ||T|| < 1. Define T° to be the identity map (that is, Tº(x) = = x, for all x € X). Let r = ||T||. Show that ||T|| ≤ r", for all n € N.
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